42811113997 has 2 divisors, whose sum is σ = 42811113998. Its totient is φ = 42811113996.

The previous prime is 42811113979. The next prime is 42811114043. The reversal of 42811113997 is 79931111824.

Together with previous prime (42811113979) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (42811114043) can be obtained adding 42811113997 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42778235241 + 32878756 = 206829^2 + 5734^2 .

It is a cyclic number.

It is not a de Polignac number, because 42811113997 - 2¹⁹ = 42810589709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42811113197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21405556998 + 21405556999.

It is an arithmetic number, because the mean of its divisors is an integer number (21405556999).

Almost surely, 2^42811113997 is an apocalyptic number.

It is an amenable number.

42811113997 is a deficient number, since it is larger than the sum of its proper divisors (1).

42811113997 is an equidigital number, since it uses as much as digits as its factorization.

42811113997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 46.

The spelling of 42811113997 in words is "forty-two billion, eight hundred eleven million, one hundred thirteen thousand, nine hundred ninety-seven".